TW200416010A - A device for the heating of a liquid - Google Patents

Abstract

The present invention concerns a device for the heating of a liquid in a beverage machine comprising - at least one set of at least two resistors, wherein said resistors are electrically linked together so as to use one resistor of each set individually or in serial with one or more of the resistors of the same set - at least one individual resistor and at least one set of at least two resistors, wherein said resistors are electrically linked together so as to use the first resistor of a set individually or in serial with one or more of the following resistors of the same set, said resistors transfering the maximum of energy to the flow of liquid and allowing a finer control of the liquid temperature.

Description

200416010 (1) Description of the invention: [Technical field to which the invention belongs] The present invention relates to a device for heating liquid in a beverage machine. [Prior Art] It is known to have a liquid heating module used in a hot beverage machine. The patent application wo 0 1/5455 1, filed in the name of Renren, relates to a liquid heating module used in a hot beverage machine. It contains a hollow tube made of metal material and a cylindrical gasket arranged in the hollow tube. At least one resistor, which is located on the first part of the outer part of the lubricating member, for preheating the liquid, and at least one other private state, which is located on the second part of the outer part of the Tibetan pipe, for flowing through The fitting of the pipe fittings. The problem with this solution is that the resistors work in parallel and therefore have a demand for energy I, because the resistors increase their energy requirements. When the temperature of the hardware needs to increase significantly, the energy requirements can reach a fairly high level. [Summary of the Invention] The purpose of the present invention is also to have a device for heating liquid in a hot beverage machine, in which the change in power demand is less important, in which the target temperature of the liquid is reached quickly, and where the liquid reaches the exhaust head or other parts , You can fine-tune the liquid temperature. The invention relates to a device for heating liquid in a hot beverage machine, comprising: at least two resistors of at least one group, wherein the resistors are electrically connected together so that one resistor of each group can be used alone, or the same resistor can be used in series. Group of one or more resistors, at least one group of individual resistors, and at least one group of at least two resistors, and cry, 86140 200416010 where the resistors are electrically connected together so that the first resistor of a group is used separately Resistors, or one or more subsequent resistors in the same group in series, which resistors transmit the maximum energy to the liquid stream and allow the temperature of the liquid to be accurately controlled. In the first embodiment of the device, a typical resistor is essentially used. In this case, there are no critical conditions in the resistors used: all possible resistors known to those skilled in the art can be used. In a second embodiment, these used resistors may be arranged on a substrate. The substrate can be of any type of material. Preferably, the substrate has good thermal conductivity and low heat capacity. The substrate is preferably a metal or ceramic magnetic material. As in the second embodiment, the resistor is preferably made from a selected group of wires and thin film groups. This thick film technology is a technology known in the electronics field and is currently used in the manufacture of resistors. The technology uses conductive inks (like glue) to coat quartz, metal, metal or beryllium oxide substrates. As mentioned before, it is preferably a metal substrate. The resistor has a power density of up to 15 to 70 W / cm2. The power density of this resistor allows water to increase very quickly from room temperature to about 85-90 ° C. For the hollow tube to have good electrical insulation, it is preferable to have a layer of varnish on the outside of the tube below the resistor. The thickness of this paint is usually between 100 and 300 microns. Finally, the thickness of the resistor of the hollow tube is coated with a layer of electrically conductive material, such as a layer of varnish or plastic. This insulating layer can be a pipe or a layer of non-conductive material. The liquid that must be heated in the device of the invention is non-standard and can be any type of fluid liquid. Preferably, the heated liquid water is used, for example, to make 86140 200416010 ^ coffee or other beverages. It may also be hot milk, such as used to confess cocoa. The heater can also be used to heat pumpable fluids or glues, 昜 / 十 or suces. Steam generation can also be taken into account, such as direct heating, hot water or brewing milk. The use of the device of the invention can also take into account small machines such as coffee machines or larger machines such as vending machines. The important feature of this Maoming is that the heating device has a series relationship with the resistor used. This is very important, because for at least three resistors, the power P used is not always the sum of the power of a single resistor. But, for example, 'in the case of a series resistor of η,

Pt〇tal- (PlXp2X ... pn) / (pi + p2 + _pn) As a result, the heating device has a more accurate adaptability to the required power ′ and a better temperature can be achieved at the machine outlet

Sun and moon are described below with reference to drawings and examples. H Taiguan: The heating device using a resistor can be equipped with at least two groups of at least two resistors and coffee makers and Shiko ^ 妁. There are 1 to 5 resistors, and a vending machine may have 1 to 0 resistors and at least one resistor, and at least one resistor, and at least one resistor, just one to one. T, there are two to five resistors crying, and one vending machine may have 1 to 10 resistors. These resistors can be equipped with a circuit or a flat stubble, and the device of the present invention can have resistors on the tube and hollow tubes. Preferably, the pipe may be made of stainless steel. The ^ of this pipe can be changed depending on the type 4 used. For example, it can have a diameter of W mm to ^ used in a coffee machine called soil 200 «m in length. 86140 200416010 Official road thickness is about 1 to 4 mm. For use in a vending machine, the Haiguan Road has a diameter of about 30 to 50 mm and a length of 200 to 400 mm. The official road thickness is the same as before. The ratio of the length of the central government road to the diameter of the pipeline is between 5 and 40. As for the module heated by the present invention, as for a pipeline resistor, it may further include a cylindrical gasket, and the cylindrical gasket may be disposed in the hollow along its entire length and substantially along its axis of symmetry. Inside the pipe. The function of the gasket is mainly to enhance the heat transfer from the pipeline to the liquid, thereby increasing the water flow speed and the transmission efficiency. The optimal speed is the speed at which a spoiler is reached. This allows good transmission of energy and rapid heating of water. The gasket is made of a plastic or ceramic material, but must be suitable for the food grade. The spacer has a low heat content and a guide material such as plastic, especially Teflon (tetrafluoroethylene tau), and can also be other food-grade materials. The ratio of the diameter of the hollow pipe to the diameter of the gasket is between about 5 and 5. The pad can be fixed or rotated along its axis of symmetry. As for a rotating gasket, the gasket can be connected with the flowmeter rotating wheel disposed at the lower part of the gasket, so that it can be driven by the flowing cold water, and the cold water can flow to the blades of the flowmeter at all angles. . The rotatable cylindrical gasket includes a wire brush. These metal brush bundles can be integrated through the gasket in a longitudinal plane (on one side only or on two symmetrical planes of the pad or in a spiral manner, such as 丨 or 2 spiral shapes). It can only be built on the inner part of the hollow tube. The brush must have proper mechanical tension and strength so as to remove the scale on the inner tube surface. The two ends of the brush bundle can be slightly in contact with the inner surface of the tube. 90 ° contact. The entire brush bundle must be designed to push water upward when it is driven by flowmeter blades 86140 200416010. The gasket can also be a hollow object that can introduce the reverse water flow of the hot water part and Cold water mixing to enhance water mixing when the water is heated. The pad can also appear on the spiral cutouts on its outer surface: this will be a good solution, it can force the liquid into the channel and achieve a spoiled state, It also helps to heat quickly at the required temperature. Finally, a spring can also be placed along the pad. In the case of a resistor with a flat base, the channel is located in the liquid flow Inside the structure, the channel is positioned along the resistor track. In this case, the resistor can also be arranged on one side of the structure or on both sides of the structure. The channel for liquid flow has a reduced section, So that the speed of the liquid reaches a turbulent state. The liquid heating module of the present invention can be used as a part of a liquid heating machine during beverage preparation. The present invention further relates to a liquid heating device, which includes-a liquid supplier,-a pump Piece for supplying the liquid to a heater, such as the aforementioned liquid heater, wherein the liquid flows from the liquid supplier through a pipe or various pipes in the device, a passage as an outlet for heating the liquid, It can be arranged on the substance to be extracted, or the heating liquid is mixed with a powder in a mixer. As in the first embodiment, based on the substance extraction, such as coffee clock or tea, the liquid heating module can be A part of a coffee machine or other similar machine. In this case, it can directly take the material extracted by a coffee holder or espresso machine, or 86140 -10- 2 first prepared Substances to be extracted from the heart and capsules, such as those of European Patent No. 512,468 2 2 03. Elimination: = Second Embodiment 'The device of the present invention is used for automatic coffee, that is, 敉: tea and coffee can be directly taken A beverage in a cocoa cup, in which the heated liquid is mixed with the relevant powder before being delivered to the cup. * The monthly JL can also be used with other ordinary coffee or vending machine components, such as valve parts, A temperature controller and a flow meter are integrated. "The present invention finally relates to the method of the above device, in which the power of the resistor and / or resistor group will be controlled so as to provide the energy required by the liquid in real time, according to the principle of energy balance. The target temperature of the liquid is reached. According to this method, the flow rate is about 50 to 300 ml / min for a coffee machine, and about 300 and 5000 ml / min for a vending machine. One of the advantages of the method of the present invention is that the machine can generally directly prepare hot water, which requires temperature or steam, without consuming energy during the waiting period. For example, when the consumer presses the “on,” position of the machine and when the machine is preparing a pre-made coffee, the waiting time is required. When the consumer decides to prepare a cup of coffee, the aggregate sends water to the first resistor In the high-level pipeline, the following poly: stop = operation, and the first resistor heats water to a temperature of about 7rc. When the energy necessary to heat the amount of water under the first resistor is transferred to it, the pump: The second resistor starts to start and fills the pipeline at the height of the second resistor. Then, this second resistor heats the cold water from the first resistor 72 to about C. In the same competition, the first resistor heats the new resistor. The cold water from the surroundings reached 72 ° C. The chestnut started again and filled the pipeline to the height of the third resistor. The second and third resistors were connected in series to heat the water to 86.0 and 86140. -11-200416010 The first dynamo and the device will cold water from the surrounding Wenjiao-…, Tu / 2 c. Then, the pump is started again, the water continues to heat (the pump does not need to stop), in order to draw the cup For coffee, the procedure takes about 20 to 30 seconds. To get a cup of coffee, repeat the same procedure. Another method uses water at a reduced rate (such as changing the frequency of the polymer pieces), fills the south of the final resistance reserve, and starts at full speed when the last resistor is reached. An example will be described in further detail. Example In this case, there are three resistors, R1 = 75〇w, R2 = 66〇w, and = 1300 W. We can use R1 alone in this embodiment, and R2 can also be used alone or Connect R3 in series. This means that you can have the following power output possibilities:

R1 750 W R2 660 W R1 R2 1410 W R2 + R3 438 W Rl, R2 + R3 1188 W This calculation result is based on the above formula. It is obvious from the table that it is impossible to add three additional resistors in the present invention, which means that you have accurate temperature adaptability and do not need high power requirements. The pipeline is a stainless hollow tube with a diameter of 20 mm and a length of 170 strokes. The liner is made of Teflon and has a diameter of 16 meters and the same length as a hollow tube. The water system flows at a rate of 50 to 2 ⑻ ml / min. The required temperature can be reached in 4 seconds. [Embodiment] 86140 200416010 As shown in Figure 1, the coffee machine includes a cold water tank (1) that can be connected to the flow meter (3) through a pipeline (2), and a pump that sends cold water to the water heating device (5) Piece (4). The heating device (5) is divided into three parts: a single first resistor R1, and two resistors R2 and R3 connected in series. These resistors are connected to the power supply through (6, 7). At the outlet of the heating device (5), the hot water flows through a duct (8) and through (1 1) to a filter (9) containing roasted and ground coffee. The filter element is a sealed filter element which is opened under pressure, such as European Patent No. 5 1 2 '486. The coffee to be drunk flows into the cup (10). The coffee machine further comprises a cold water temperature sensor (1 2), a hot water temperature sensor (1 3), and sensors (1 4) and (1 4) and ( 1 5). It is also possible with the invention to have a steam-generating duct (16) at the heater outlet. In the circuit, the appearance of switches S1, 32 and 83 is mainly used for the operation of the coffee machine.涊 Coffee machine operation, ^ I A slave, level strength machine. The child pump (4) sends cold water from the water tank (1) through the pipeline (2) so that the water can reach the height and the recording stops. At this time, only the switch Sl is closed, two = voltage and the water is heated to a temperature of about 7rc. When the necessary energy is transferred from the -resistor to water (the calculation theorem of energy balance), with the & operation, the water moves to the ancient life of R 2 and then closes. When the consumption time is stopped, the switch transmits to the approximator: the energy required to heat the water through the resistor-the resistor reaches 1 = the energy required to heat the water under the resistor, when C, the pump is operated again, To the height of the third resistor. Then the switch S1_ is closed and two; move so that the three resistors can transmit energy to the water, so that the device located at: 86140 200416010 water plus soil is about 8 6 C. The pump and heater operate continuously so that the water is directed to the extraction head. Figures 2 and 3 provide close-up views of a heater in the form of a pipe. The heater (20) represents a water inlet (21) and a water outlet (22). A liner (23) is located on the inside of the pipe and appears on its outer spiral cut (25): the water is thus forced through the passage (26). On the outside (M) of the official road, there are resistors M, 2 and 3 (not shown), and water is allowed to be heated according to the above method. Figure 4 shows the heater (30) in a flat form. There is a water inlet (30) and a water outlet (32). Water flows through the channel (33). As in this embodiment, on one or both sides of the heater, there may be 1-5 resistors (not shown) [Brief description of the drawings] The present invention can be taken into account with regard to the following drawings and the above detailed description: / Moon white, the liquid dispersion in the coffee machine Figure 1 is a sample for extracting the closed filter of Example 1 2 is a schematic view of the heater in the first embodiment, FIG. 3 is a schematic view of the heater in FIG. 2, and FIG. 4 is a schematic view of the heater in the second embodiment. Description of representative symbols] 2 3 4 5 Cold water tank pipeline flowmeter Pump parts heating device 86140 -14- 200416010 6, 7, U connecting line 8, 16 Conduit 9 Filter core 10 Cup 12 Cold water temperature sensor 13 Hot water temperature sensing Benefits 14, 15 Sensors, 20, 30 Heaters 21, 31 Water inlets 22, 32 Water outlets 23 Gaskets 24 Outer sides 25 Spiral cutouts 26 channels 33 channels IU, R2, R3 resistors SI, S2, S3 switches 86140 -15-

Claims (1)

200416010 The scope of patent application: 1 · A device for heating liquid in a beverage machine, comprising: at least two resistors of at least one group, wherein the resistors are electrically connected together so that each group can be used individually— Resistors, or one or more resistors in the same group in series,-at least one separate resistor and at least two resistors in at least one group, where the resistors are electrically connected together so that Single-use the first resistor of a group alone, or use one or more subsequent resistors of the same group in series. The resistor transmits the maximum energy to the liquid flow and allows the liquid temperature to get a more accurate control. 2. The device according to the scope of patent application, wherein the resistor system is arranged on a pipeline, and the liquid flows through the pipeline. 3. The device of claim 2 in the scope of the patent, wherein the resistor system further comprises a cylindrical gasket disposed along the entire length and substantially along its axis of symmetry. 4. The device according to item 2 or 3 of the patent application scope, wherein the pad includes a spiral cutout on its outer surface.搴 5. The device according to any one of claims 2 to 4, wherein a spring is arranged along the lining. 6. The device according to any one of claims 2 to 5, wherein the ratio of the pipe length to the diameter is between about 5 and 40. 7. The device according to any one of claims 3 to 5, wherein the gasket is an insulating material, which is selected from the group consisting of plastic, metal, and ceramic magnets in the group of 86,140,204,600. 8 • The device of any one of items 3, 4 or 7 of the scope of patent application, wherein the pad is fixed or can be rotated along its axis of symmetry. 9 • The device according to any one of claims 3 to 8, wherein the rotation of the pad is because it is connected with a flow meter rotating wheel arranged below the pad. 1〇 The device according to item 9 of the patent application scope, wherein the rotatable cylindrical bush includes a wire brush. }! • The device as claimed in item 1 of the patent application, wherein the resistor system is arranged on a / flat base and the liquid flows through a channel positioned along the resistor track. l2. The device according to item 11 of the patent application, wherein the channel through which the liquid flows has a reduced cross-section so that the liquid flow reaches a turbulent state. J 3. The device according to any one of items 1 to 12 of the scope of patent application, wherein the different resistor system is made of a form selected from the group consisting of a wire and a thick film resistor. ^ i 4 • The device according to any one of claims 1 to 13 in which the resistors have a power density of up to 15 to 70 W / cm2. i 5 • The device according to item 2 of the patent application scope, in which there is a layer of bright paint on the outside of the hollow tube under the resistor. ~ 16 · If any of the items 1 to 15 of the scope of the patent application is installed, the resistor is covered or insulated with a non-conductive material. 17. A liquid heating device comprising:-a liquid supplier, 86140 200416010-a pump for supplying the liquid to-a heater, such as a liquid heating device according to any one of claims i to 16 A device in which the liquid flows from the liquid supplier through a pipeline or various pipes in the device, a passage, which is the outlet of the heated liquid, which can be arranged on the substance to be extracted, or in a mixer, The heated liquid was mixed with powder. · 18. A method for heating a system such as the seventh item in the scope of patent application, in which the power of the resistor and / or resistor group is controlled so as to provide the liquid immediately, thereby achieving the liquid according to the principle of energy balance Target / CT temperature. 19. The method of claim 18, wherein the flow rate is about 50 and 300 ml / min for a coffee machine, and about 300 and 5000 ml / min for a vending machine. 86140